The Lower Leg Swelling Measurement during Driving Posture by Bioimpedance Method and Construction of Prediction Equation of the Lower Leg Swelling by Thigh Pressure

Abstract

In this study, we focused on lower leg swelling resulting from physical loading caused by prolonged sitting posture such as when driving. The objective was to obtain prediction equations for the evaluation value of lower leg swelling using the reciprocal of the biological impedance, which represents the resistance of extracellular fluid, based on the thigh pressure distribution, the participants' physical characteristics, and the seating time. Twenty-three participants （12 males and 11 females） measured the impedance and the thigh pressure distribution in the lower leg at three different inclination angles （8, 0, and -8 degrees from the horizontal plane）. Prediction equations for the lower leg swelling were derived for male participants and female participants, and the accuracy of each equation was checked using the adjusted R².